-
Notifications
You must be signed in to change notification settings - Fork 43
/
Copy pathremote.go
155 lines (133 loc) · 3.85 KB
/
remote.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
package remote
import (
"fmt"
"net/http"
"github.com/google/go-containerregistry/pkg/authn"
"github.com/google/go-containerregistry/pkg/name"
v1 "github.com/google/go-containerregistry/pkg/v1"
"github.com/google/go-containerregistry/pkg/v1/remote"
"github.com/google/go-containerregistry/pkg/v1/remote/transport"
"github.com/google/go-containerregistry/pkg/v1/types"
"github.com/google/go-containerregistry/pkg/v1/validate"
"github.com/pkg/errors"
"github.com/buildpacks/imgutil"
)
const maxRetries = 2
type Image struct {
*imgutil.CNBImageCore
repoName string
keychain authn.Keychain
addEmptyLayerOnSave bool
registrySettings map[string]imgutil.RegistrySetting
}
func (i *Image) Kind() string {
return `remote`
}
func (i *Image) Name() string {
return i.repoName
}
func (i *Image) Rename(name string) {
i.repoName = name
}
func (i *Image) Found() bool {
_, err := i.found()
return err == nil
}
func (i *Image) found() (*v1.Descriptor, error) {
reg := getRegistrySetting(i.repoName, i.registrySettings)
ref, auth, err := referenceForRepoName(i.keychain, i.repoName, reg.Insecure)
if err != nil {
return nil, err
}
return remote.Head(ref, remote.WithAuth(auth), remote.WithTransport(imgutil.GetTransport(reg.Insecure)))
}
func (i *Image) Identifier() (imgutil.Identifier, error) {
ref, err := name.ParseReference(i.repoName, name.WeakValidation)
if err != nil {
return nil, errors.Wrapf(err, "parsing reference for image %q", i.repoName)
}
hash, err := i.Digest()
if err != nil {
return nil, errors.Wrapf(err, "getting digest for image %q", i.repoName)
}
digestRef, err := name.NewDigest(fmt.Sprintf("%s@%s", ref.Context().Name(), hash.String()), name.WeakValidation)
if err != nil {
return nil, errors.Wrap(err, "creating digest reference")
}
return DigestIdentifier{
Digest: digestRef,
}, nil
}
// Valid returns true if the (saved) image is valid.
func (i *Image) Valid() bool {
return i.valid() == nil
}
func (i *Image) valid() error {
reg := getRegistrySetting(i.repoName, i.registrySettings)
ref, auth, err := referenceForRepoName(i.keychain, i.repoName, reg.Insecure)
if err != nil {
return err
}
desc, err := remote.Get(ref, remote.WithAuth(auth), remote.WithTransport(imgutil.GetTransport(reg.Insecure)))
if err != nil {
return err
}
if desc.MediaType == types.OCIImageIndex || desc.MediaType == types.DockerManifestList {
index, err := desc.ImageIndex()
if err != nil {
return err
}
return validate.Index(index, validate.Fast)
}
img, err := desc.Image()
if err != nil {
return err
}
return validate.Image(img, validate.Fast)
}
func (i *Image) Delete() error {
id, err := i.Identifier()
if err != nil {
return err
}
reg := getRegistrySetting(i.repoName, i.registrySettings)
ref, auth, err := referenceForRepoName(i.keychain, id.String(), reg.Insecure)
if err != nil {
return err
}
return remote.Delete(ref, remote.WithAuth(auth), remote.WithTransport(imgutil.GetTransport(reg.Insecure)))
}
// extras
func (i *Image) CheckReadAccess() (bool, error) {
var err error
if _, err = i.found(); err == nil {
return true, nil
}
var canRead bool
if transportErr, ok := err.(*transport.Error); ok {
if canRead = transportErr.StatusCode != http.StatusUnauthorized &&
transportErr.StatusCode != http.StatusForbidden; canRead {
err = nil
}
}
return canRead, err
}
func (i *Image) CheckReadWriteAccess() (bool, error) {
if canRead, err := i.CheckReadAccess(); !canRead {
return false, err
}
reg := getRegistrySetting(i.repoName, i.registrySettings)
ref, _, err := referenceForRepoName(i.keychain, i.repoName, reg.Insecure)
if err != nil {
return false, err
}
err = remote.CheckPushPermission(ref, i.keychain, http.DefaultTransport)
if err != nil {
return false, err
}
return true, nil
}
var _ imgutil.ImageIndex = (*ImageIndex)(nil)
type ImageIndex struct {
*imgutil.CNBIndex
}